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(No Model.)

G. B. UOTTRELL. SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

3 Sheets-Sheet 1.

Patented Apr. 28,1891.

Tu: NORRIS nrzns co., PHuYO-LIYMQ., WASHINGTON, o. :4

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" (N0 ModelJ 3 Sheets-Sheet 2.

C. B. GOT-T-RBLL. SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

No. 451,168. I Patente l Apr. 28, 18 91.

(No Model.) I 3 Sheets-Sheet 3.

C. B. COTTRBLL, SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

No. 451,168. Patented Apr. 28,1891.

lgmim Wi'fizessgg; v g 07 Between the cylinder A and the table B, and

UNITED STATES PATENT OFFICE.

SHEET-DELIVERY APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Application filed July 13, 1889.

Patent No. 451,168, dated April 28, 1891.

Serial No. 317,372. (No model.)

To all whom it may concern:

Be it known that I, CALVERT B. COTTRELL, of \Vesterly, in the county oflVashington and State of Rhode Island, have invented a new and usefulImprovement in Sheet-Delivery Apparatus for Printing-Machines, of whichthe following is a specification, reference being had to theaccompanying drawings.

I will first proceed to describe my invention fully and in detail withreference to the accompanying drawings, and afterward point out itsnovelty in claims.

Figure 1 is a side view of such parts of a cylinder printing-machine asare necessary to illustrate my invention. Fig. 2 is a plan correspondingwith Fig.1. Fig. Sis an elevation of the receiving-table and a portionof the delivery apparatus on a larger scale than Figs. 1 and 2. Fig. 4represents atransverse vertical section on the same scale as Fig. 3,taken in the dotted line 03 50, Fig. 1. Fig. 5 is a plan, partly insection, corresponding with Fig. 3, of details which will be hereinafterdescribed.

Similar letters of reference designate corresponding parts in all thefigures.

A designates the impression-cylinder, supported in journal-boxes a a inthe framing A of the machine.

13 designates the receiving-table, supported between standards B,erected upon the framing A at the front end of the machinethat is tosay, the end farthest from the cylinder.

at some distance above them, is the delivery apparatus, which, as hererepresented, is substantially similar to that shown and described in myLetters Patent No. 387,768, dated August 14, 1888. This deliveryapparatus consists of two endless chains 0 and deliverygrippers c 0 0carried by the said chains. Two sets of these grippers are shown on thechains arranged equidistant from each other, each set consisting of agripper-bar 0 having fingers or grippers c and a rest bar 0 The saidchains are supported by chain-wheels c on two shafts c cijournaled,respectively, in upward extensions of the cylinder-frames A andreceiving-table standards B and between the said chain-wheels they aresupported by stationary tracks or ways D.

ranged under the delivery apparatus, where it is guided by pairs ofrolls 'or wheels 6, some of which are journaled in brackets dependingfrom the tracks or ways D, and others are journaled in the upwardextension of the receiving-table standards B. In the ends of thiscarriage are shafts 6 e which have wheels 6* upon them for the purposeof carrying a traveler consisting of a series of endless tapes or bands6 said tapes being wholly supported and operated by the said wheels. Thewheels 6* on the shaft e are fast on said shaft, to be turned by it, butthe shaft 6 is fixed in the carriage and its wheels 6* turn loosely uponit.

'The carriage E has imparted to it a longitudinal reciprocating motionby means of a cam L on a shaft L, which may be driven in any suitablemanner to make one revolution for every revolution of the cylinder, thesaid cam transmittinga positive motion to the said carriage through anelbow-lever L having a fixed fulcrum at Z, supported in the framing, anda connecting-rod L between the said lever and the carriage. The cam L isso constructed as to move the carriage E back and forth and to retain itat rest in its inner or backward position (shown in Fig. 1) while theprinted sheet is being carried forward by the grippers c c c to bedeposited upon the traveler or tapes a of the carriage. The travelerortapes 6 while the sheet is being carried forward over them by thedelivery-grippers c c 0 as just described, the carriage E being at thattime stationary, have a progressive movement in the same direction asthe lower portions of the chains and at the same speed as the saidchains, in order to. prevent the sheet from dragging upon the tapes andso blurring the impression. Then after the sheet has been deposited uponthe tapes, and while the carriage moves forward to the position shown inFig. 3, in which it lets go of the sheet to per-' E designates areciprocating carriage ar- The carriage E and the traveler e and theirmovements, as above described, resemble what are described in my LettersPatent No. 387,768, hereinbefore referred to, but according to thatpatent the backward movement of the carriage is produced by a spring,while according to the present improvement the backward as well as theforward movement of the carriage is produced positively by means of thecam L.

The carriage E is provided at its front end with grippers for taking thefront edge of the sheet after it has been deposited on the traveler ortapes. These grippers are represented as like those in my aforesaidLetters Patent, consisting of hooked gripper-fingers f, carried by abarf which is supported by arms f hung loosely on the fronttape-carrying shaft e the said fingers holding the sheet against theedges of paper-supporting wheels f on the said shaft 6 These grippersare closed automatically by a spring f*, one end of which is secured tothe shaft 6 and the other end to one of the arms f but they are heldopen while the carriage is in its rearward position to receive the sheetshown in Fig. 1 by arms f attached to the hubs of the arms f beingpressed into contact with fixed stop-pins f secured to the standards B.The said grippers remain open while the carriage is stationary and thesheet is being carried forward upon the said carriage, and are allowedto close as the carriage starts forward and while it moves forward, andthey are opened at the proper time to let go the sheet as the carriagecompletes its forward movement, as shown in Fig. 3, by arms f, whichproject downward from the said arms f coming in contact with fixed stopsf on the sides of the reeeiving table.

The receiving-table is provided at its front end with sheet-eveners band with grippers J, having elastic forks or jaws j for the purpose oftaking a slight hold of the sheet, which is brought between them by theforward movement of the carriage. These nippers project upward from abar j, which is hung in levers J, one at each side of the machine, andon the carriage E at each side is an inclined cam As the carriage comesforward the action of the cams 7' on the levers J raises the nippers Jto the level of the sheet, and as the front edge of the sheet passesinto the jaws or forks of the nippers the downward-depending arms f onthe arms f of the carriage come against stops f 7 on each side of thetable B, and thereby raise the arms f and bar f thus moving the hookedfingers or grippers f out of engagement with the edge of the sheet. Asthe carriage E moves rearward the cams 7' leave the levers J and thenippers J fall to the position shown in Fig. 1 from the position shownin Fig. 3. The nippers J are bowed, as shown at j and as they descendsuch projections 9' bear on the edge of the table and draw the nippersforward and away from the edge of the sheet, which is arrested by thesheet-cveners b and drops squarely upon the pileon the table 13.

The operation of the carriage and its traveler or tapes and grippers issimilar to that described in my aforesaid Letters Patent, but I willbriefly here describe it. The carriage E, having been stationary withits tapes moving forward while the sheet was taken from the cylinder bythe deliver grippers c c 0 commences its forward movement toward andover the receiving-table just as the said grippers are about to open tolet go of the sheet. Immediately on the commencement of the said forwardmovement the delivery grippers are opened by the cam 0 provided on theframing for the purpose, and instantly afterward the carriage-gri ppersf which have been open while the carriage was stationary, close and takethe front end of the sheet released by the delivery-grippers. The sheetlies upon the tapes during the forward movement of the carriage, thetapes then having no movement independently of the carriage. As thecarriage reaches the end of its forward movement and carries the frontedge of the sheet in between the elastic jaws j of the nippers thecarriage-grippers are opened, and as the carriage returns theprogressive movement of the tapes within it in the opposite direction toits own movement causes the sheet to be pushed or eased off the tapesand left in the nippers J, which are afterward depressed to bring thesheet down upon the receiving-table or upon the pile of printed sheetspreviously deposited thereon.

The means of giving motion to the traveler or tapes in the carriage arethe same as those described in my aforesaid Letters Patent, but may herebe briefly mentioned. On the tapewheel shaft 6' is fast a smallratchet-wheel g, (see Figs. 3 and 5,) and on the same shaft is rigidlymounted a gear e and a loose spurgear g, which carries a pawl engagingwith said ratchet-wheel. The said pawl and ratchet-wheel form such aclutch connection between the spur-gear g and the tape-wheel shaft e aswill only permit the said gear to turn the shaft in one direction. Twoother spur-gears c 6 corresponding in size and pitch with 6 are mounted,as shown in Figs. 1 and 2, on axles e e supported in a hanger dependentfrom one of the stationary ways D, and fast to the said gear a is a geara which gears with one of the chains 0 of the delivery apparatus. Thenthe carriage is in its backward position (shown in Fig. 1) to receivethe printed sheet, the gear a is in gear with e and the tape-shaft e andtapes are driven by the chain 0, gears e e e, and e the spring-pressedpawl g and ratchetwheel g. WVhen the carriage runs forward,

the gear g runs in a stationary rack G, secured under one of thestationary ways D and is turned by it, but it does not turn thetapeshaft 6 or move the tapes because the pawl g moves over the teeth ofthe ratchet-wheel;

IOC

but when the carriage moves back and the said gear g is turned by therack the pawl engages with the ratchet-wheel and turns it and the shaft6 and gives the tapes the necessary movement.

hat I claim as my invention, and desire to'secure by Letters Patent, is-

1. The combination, with an impressioncylinder, a delivery apparatus,anda receiving-table, of a reciprocating carriage located under andmoving independently of the delivery apparatus for the reception of theprinted sheet from the delivery apparatus, and mechanism, substantiallyas herein described, for positively moving said carriage in bothdirections between the delivery apparatus and the said table,substantially as herein set forth.

2. The combination, with an impressioncylinder, a delivery apparatus,and a receiving-table, of a reciprocating carriage located under andmoving independently of the delivery apparatus for the reception of theprinted sheet from the delivery apparatus, and a cam or its equivalentfor actuating said carriage, constructed and arranged to allow saidcarriage to remain at rest while a sheet is deposited upon it,substantially as herein described.

3. The combination, with an impressioncylinder, a delivery apparatus,and a receiving-table, of a reciprocating carriage pro vided with atraveler or tapes for the reception of the printed sheet from thedelivery apparatus, a rack, gears, and clutch connection for impartingto the traveler or tapes a progressive movement during the returnmovement of the carriage, and cam mechanism, substantially as hereindescribed, for moving the carriage in both directions, substantially asherein set forth.

4. The combination, with an impressioncylinder, a delivery apparatus,and a receiving-table, of a reciprocating carriage provided with atraveler or tapes for the reception of the printed sheet from thedelivery apparatus, said traveler or tapes havinga pro-- gressivemovement during the return movement of the carriage, but beingmotionless during the forward movement of the latter, a stationary rack,a gear-wheel on the carriage gearing with said rack, a clutch forengaging said gear-wheel with said traveler or tapes, and a cammechanism, substantially as herein described, for positively moving thecarriage in both directions, substantially as set forth. I

5. The combination, with an impressioncylinder, a delivery apparatus,and a receiving-table, of a reciprocating carriage and tapes on saidcarriage for the reception of the printed sheet from the deliveryapparatus, having a progressive movement during the return movement ofthe carriage toward the cylinder, whereby their upper sheet-supportingportions are moved toward the table, and mechanism, substantially asherein described, for positively moving the said carriagein bothdirections and for giving motion to said tapes on said carriage,substantially as herein set forth.

6. The combination, with an impressioncylinder, a delivery apparatus,and a receiving-table provided with a traveler or tapes for thereception of the printed sheet from the delivery apparatus, saidtraveler or'tapes having a progressive movement toward said table whilereceiving the sheet upon them and a corresponding movement while thecarriage makes its return movement toward the cylinder, but beingmotionless on their rollers during the forward movement of the carriagetoward said table, and mechanism, substantially as herein described, forproducing the positive movement of the carriage in both directions andfor giving motion to said traveler or tapes, substantially as herein setforth.

CALVERT B. COTTRELL.

Witnesses: I

FREDK. HAYNES, GEO. BARRY.

